MPC2104

•MPC2105•MPC2106•MPC2107

6

MOTOROLA FAST SRAM

PIN DESCRIPTIONS

Pin Locations

Symbol

Type

Description

68, 69, 70, 71, 73, 74, 75, 76,

78, 79, 80, 82, 83, 84, 85,

159, 160, 161, 162, 164, 165,

166, 167, 169, 170, 171, 173,

174, 175

A0 – A28

Input

Address Inputs – (MSB:0, LSB:28)

62

ADDR0

Input

Least significant address bit when asynchronous Data RAMs are used.

153

ADDR1

Input

Next to least significant address bit when asynchronous Data RAMs are used.

30, 56, 117, 146, 148

CLK0 – CLK4

Input

Clock Inputs – CLK2 is for Tag RAM, CLK0, 1, 3, and 4 are for Data RAMs only.

For MPC2106 use all the clocks. For MPC2104 or MPC2105 use CLK0–CLK2

only. For MPC2107 use CLK2 only.

4, 5, 6, 7, 10, 11, 12, 14, 16,

17, 19, 20, 22, 24, 25, 26, 27,

95, 96, 97, 98, 101, 102, 103,

105, 107, 108, 110, 111, 113,

115, 119

DH0 – DH31

I/O

High Data Bus – (MSB:0, LSB:31)

32, 33, 34, 37, 38, 39, 40, 43,

44, 45, 47, 49, 50, 52, 53, 54,

121, 122, 124, 125, 126, 129,

130, 131, 133, 135, 136, 138,

139, 141, 143, 144

DL0 – DL31

I/O

Low Data Bus – (MSB:0, LSB:31)

9, 15, 21, 28, 35, 42, 48, 58

DP0 – DP7

I/O

Data Parity Bits – (MSB:0, LSB:7)

3, 94

PD2, PD3

Output

Presence detect bits.

2

PD0/IDSCLK

Input

Presence detect bit 0/EEPROM serial clock. (EEPROM option only.)

93

PD1/IDSDATA

I/O

Presence detect bit 1/EEPROM serial data. (EEPROM option only.)

64, 65

ADS0, ADS1

Input

Data RAM Address Strobe – For MPC2104 or MPC2105 use ADS0 only. For

MPC2106 use ADS0, ADS1.

151

ALE

Input

Data RAM Address Latch Enable – Use for asynchronous Data RAM only.

155, 156

CNTEN0,

CNTEN1

Input

Data RAM Count Enables – For MPC2104 or MPC2105 use CNTEN0 only. For

MPC2106 use CNTEN0, CNTEN1.

59, 60

COE0,

COE1

Input

Data RAM Output Enables – For MPC2104 or MPC2105 use COE0 only. For

all others use COE0, COE1.

100, 106, 112, 120,

128, 134, 140, 150

CWE0 – CWE7

Input

Data RAM Write Enables – (MSB:0, LSB:7)

87

TCLR

Input

Tag RAM clear.

88

MATCH

Output

Tag RAM active high match indication.

178

VALIDIN

Input

Tag RAM valid bit.

179

TWE

Input

Tag RAM write enable.

89

TOE

Input

Tag RAM output enable.

90

DIRTYIN

Input

Dirty input bit.

181

DIRTYOUT

Output

Dirty output bit.

180

STANDBY

Input

Standby pin. Reduces standby power consumption.

176, 63, 154

RESERVED

Reserved pin.

8, 23, 51, 61, 77, 99, 114,

142, 152, 168

VCC3

Input

+ 3.3 V power supply. Must be connected.

18, 36, 66, 67, 86, 109, 127,

157, 158, 177

VCC5

Input

+ 5 V power supply. Must be connected.

1, 13, 29, 31, 41, 46, 55, 57,

72, 81, 91, 92, 104, 116,

118, 123, 132, 137, 145,

147, 149, 163, 172, 182

VSS

Input

Ground

176

BURSTMODE

Input

Burstmode. 0 = Linear, 1 = Interleaved.